Home / 12,458.75-18,688.46-3,098.39

Finding the Fourth Proportional to 12,458.75, 18,688.46 and 3,098.39

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Solution

The fourth proportional to 12,458.75, 18,688.46 and 3,098.39 is: 4,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.75 : 18,688.46 = 3,098.39 : x
  2. Step 2: Convert to fraction form
    12,458.75/18,688.46 = 3,098.39/x
  3. Step 3: Cross multiply
    12,458.75x = 18,688.46 × 3,098.39
  4. Step 4: Simplify right side
    12,458.75x = 57,904,028.65
  5. Step 5: Solve for x
    x = 57,904,028.65/12,458.75
  6. Step 6: Final answer
    x = 4,647.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.